[PATCH] D84417: [MSP430] Do not use __mspabi_cmp[fd] for FP comparisons

[Anatoly Trosinenko via Phabricator via llvm-commits]

atrosinenko created this revision.
atrosinenko added reviewers: asl, awygle, pftbest.
Herald added a subscriber: hiraditya.
Herald added a project: LLVM.

According to MSP430 EABI document, Section 6.2, the result of
__mspabi_cmp[fd] is undefined if either of its arguments is NaN.

See Sections 6.1 and 6.2 of MSP430 EABI document <https://www.ti.com/lit/an/slaa534a/slaa534a.pdf> for details.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D84417

Files:
  llvm/lib/Target/MSP430/MSP430ISelLowering.cpp
  llvm/test/CodeGen/MSP430/cmp-return-type.ll
  llvm/test/CodeGen/MSP430/libcalls.ll

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